This is an appeal from a trial court order denying appellant’s motion to reconsider and modify his conditions of release. We hold that the order is “supported by the proceedings below,” D.C.Code § 23-1324(b) (1989), and accordingly affirm.1
Appellant Martin was convicted of first-degree murder while armed2 and assault with intent to kill while armed.3 On appeal his convictions were reversed by this court, and the case was remanded for a new trial. Martin v. United States, 606 A.2d 120 (D.C.1991) (“Martin I”). The government’s petition for rehearing en banc was denied. Id. at 136. Martin then filed in the trial court a motion to reconsider his conditions of release, challenging an earlier decision to detain him without bond pending trial. The court held a hearing in June of this year and, at its conclusion, denied the motion under D.C.Code § 23-1325(a).4 Relying in part on the facts of the case as recited in both the briefs and the opinion in Martin I, the court found by clear and convincing evidence that Martin would be a danger to the community:
There are a lot of factors that go into danger quite apart from how the jury is going to evaluate the motive evidence in this case[5]....
It seems to me, no matter how the jury ultimately resolves this issue with respect to motive ... I think, considering the totality of all the circumstances, including his conduct and his prior criminal history, it still to me proves clear and convincing evidence of his danger, quite apart from the jury’s ability to determine the issue of his guilt or innocence based upon a different standard of guilt beyond a reasonable doubt.
The court therefore denied the motion to reconsider the conditions of release and set the case for trial on September 21.
Martin noted this appeal and moved for summary reversal of the trial court’s order. The government, in response, filed an opposition to Martin’s motion for summary reversal, in which it argued that “the order of the trial court must be affirmed” because that order is, in the words of D.C.Code § 23-1324(b), “supported by the proceedings below.”6 The government did not, however, file a cross-motion for summary affirmance.
We are fully satisfied that the trial court’s order meets the test of section 23-1324(b). We agree with the government, *53first of all, that the court could permissibly consider the evidence at the previous trial in deciding the motion. See D.C.Code § 23-1322(c)(5) (1989) (information “offered in connection with” any order detaining a defendant before trial “need not conform to the rules pertaining to the admissibility of evidence in a court of law”); see also United States v. Edwards, 430 A.2d 1321, 1334 (D.C.1981) (en banc) (information upon which court bases its ruling “need not be sworn testimony”), cert. denied, 455 U.S. 1022, 102 S.Ct. 1721, 72 L.Ed.2d 141 (1982). That evidence, even standing alone, would provide sufficient support for the trial court’s order.7 We note also that we are merely reviewing that order, not deciding the issue of release de novo. “Our review function does not permit us to make a different decision anew so long as support (a rational basis) exists for the bail order imposed.” Ireland v. United States, 406 A.2d 1259, 1260 (D.C.1979), citing D.C.Code § 23-1324(b). Appellant Martin has not demonstrated to our satisfaction that the trial court’s order lacks a rational basis.
We take this occasion to dispel a cloud of uncertainty that has darkened our appellate skies since our recent decision in Kleinbart v. United States, 604 A.2d 861 (D.C.1992), which was also an appeal from a pre-trial detention order. In an earlier appeal from another such order, a different division of the court had denied a motion by Kleinbart for summary reversal and had then sua sponte granted summary affir-mance, even though the government had not moved for it. The Kleinbart opinion characterized this action by the earlier division as “a perplexing add-on” and said, in dictum, that an affirmance sua sponte, unrequested by the appellee, was “highly unusual and should be reserved for the clearest of situations.” Id. at 867. Our dissenting colleague, citing this language, maintains that we should treat this as a regular appeal, albeit “on an expedited track,” and that this case cannot “fairly be characterized as compelling enough to meet the Kleinbart test.” Post at 55. For two reasons, we disagree.
First, although the government’s response to Martin’s motion for summary reversal is captioned as an “opposition” to that motion rather than a motion for summary affirmance, the “opposition” itself in two places (pages 1 and 14) urges us to affirm the trial court’s order. We have often said that “[t]he nature of a motion is determined by the relief sought, not by its label or caption.” Wallace v. Warehouse Employees Union No. 730, 482 A.2d 801, 804 (D.C.1984) (citations omitted). Applying this principle, we think it entirely reasonable to treat the government’s response as a motion for summary affirmance (since affirmance is “the relief sought”), even though its label — and only its label — says it is an “opposition.”
Second and more generally, Kleinbart notwithstanding, summary disposition has been the norm in pre-trial release appeals for many years in this court, even when the appellee fails to request it. Both by statute 8 and by court rule,9 such appeals must be expedited. Moreover, our scope of review is limited, both by section 23-1324 itself and by case law, see Ireland, supra, and the issues are usually simple and straightforward. Finally, it is to the advantage of all parties that such an appeal be decided quickly, so that an accused may not languish in jail any longer than necessary if the trial court’s ruling turns out to be erroneous. Full briefing and argument in such cases would clearly be the exception, not the rule. Cf. Coleman v. United States, 414 A.2d 528, 530 (D.C.1980) (proposing “a summary appellate procedure” in pre-trial double jeopardy appeals).
In this context we see no barrier to summary affirmance on the court’s own motion *54in an appropriate case. Even Kleinbart acknowledges that “this court presumably does have authority to affirm a pretrial detention order sua sponte when ruling on a motion for summary reversal....” 604 A.2d at 867. The test for determining when such action is appropriate is found in United States v. Ecker, 156 U.S.App.D.C. 223, 479 F.2d 1206 (1973). The appellant in Ecker had appealed from an order denying his application for conditional release from Saint Elizabeths Hospital, where he had been committed after being found not guilty of rape and murder by reason of insanity. He moved in the Court of Appeals for summary reversal, and the government filed an opposition. The court denied the motion and then sua sponte summarily affirmed the trial court’s order. Chief Judge Bazelon, writing for the court, concluded that summary affirmance was justified for two reasons:
First ... we are convinced that the standard for summary disposition is met, on this record, by the Government. Second, we see no real prejudice to the rights of appellant in so doing.
Id. at 227, 479 F.2d at 1210. Following Ecker, we conclude that the government in its “opposition” has met the standard for summary disposition,10 and that appellant Martin would suffer “no real prejudice” from a summary affirmance instead of a full-blown appeal, with all its built-in delays. We have no quarrel with the notion that a sua sponte summary affirmance is “unusual,”11 but that does not mean that we should shy away from it when it is warranted.
Of course, this whole discussion could have been avoided if the government had put the right caption on its pleading. If the government, without changing a word of its text, had called the document it filed a “motion for summary affirmance” rather than an “opposition to appellant’s motion for summary reversal,” this opinion (including the dissent) probably would not even have been written. We trust that in the future the government will be more precise in its labeling.
For the foregoing reasons, the order from which this appeal is taken should be, and hereby is, summarily
Affirmed.
. We grant appellant’s motion for expedited consideration of this appeal.
. D.C.Code §§ 22-2401, 22-3202 (1989).
. D.C.Code §§ 22-501, 22-3202 (1989).
. Section 23-1325(a) provides:
A person who is charged with murder in the first degree or assault with intent to kill while armed shall be treated in accordance with the provisions of section 23-1321 [which provides generally for pre-trial release in criminal cases] unless the judicial officer has reason to believe that no one or more conditions of release will reasonably assure that the person will not flee or pose a danger to any other person or to the community. If such a risk of flight or danger is believed to exist, the person may be ordered detained. In any pretrial detention hearing under the provisions of this section, if the judicial officer finds that there is a substantial probability that the person has committed murder in the first degree while armed with or having readily available a pistol, firearm, or imitation firearm, there shall he a rebuttable presumption that no condition or combination of conditions of release will
reasonably assure the safety of any other person or the community.
D.C.Code § 23-1325(a) (1992 Supp.), as amended by the Bail Reform Amendment Act of 1992, § 6, 39 D.C.Reg. 2134, 2140 (1992).
5. The conviction had been reversed in Martin I because the jury had not had an opportunity to hear certain evidence from Martin’s co-defendant Brandon, who was the actual gunman, relating to his possible motive for shooting the decedent. Brandon pleaded guilty at the close of the government’s case. Martin then sought to call Brandon as a witness, but he refused to testify until after he was sentenced, invoking his Fifth Amendment privilege. We held that the court should have granted a mistrial, as Martin requested, and continued the trial until after Brandon’s sentencing so that Brandon could testify.
. Section 23-1324(b) authorizes any person who "is detained after ... [the Superior Court] denies a motion ... to amend an order imposing conditions of release” to appeal to this court from that denial. "Any order so appealed shall be affirmed if it is supported by the proceedings below.”
. The court also noted Martin’s "prior criminal history,” which included convictions of burglary and of introducing contraband into a penal institution.
. D.C.Code § 23-1324(b) (1989) (pre-trial release appeals “shall be determined promptly").
.D.C.Ct.App.R. 4(c) prescribes detailed procedures for several categories of "expedited appeals,” which include pre-trial detention appeals and other “bail appeals” under section 23-1324.
. See Oliver T. Carr Management, Inc. v. National Delicatessen, Inc., 397 A.2d 914, 915 (D.C.1979); In re Del., 310 A.2d 834, 836 (D.C.1973); United States v. Allen, 133 U.S.App.D.C. 84, 85, 408 F.2d 1287, 1288 (1969).
. See Kleinbart v. United States, supra, 604 A.2d at 867 ("highly unusual”); United States v. Ecker, supra, 156 U.S.App.D.C. at 227, 479 F.2d at 1210 ("somewhat unusual").