The behaviour of the interfaces in this library is specified by the following Standards.
Table A-8. libXext Function Interfaces
| DPMSCapable[1] | XShmCreateImage[1] | XSyncQueryExtension[1] |
| DPMSDisable[1] | XShmCreatePixmap[1] | XSyncSetCounter[1] |
| DPMSEnable[1] | XShmDetach[1] | XSyncSetPriority[1] |
| DPMSForceLevel[1] | XShmGetEventBase[1] | XSyncValueAdd[1] |
| DPMSGetTimeouts[1] | XShmGetImage[1] | XSyncValueEqual[1] |
| DPMSGetVersion[1] | XShmPixmapFormat[1] | XSyncValueGreaterOrEqual[1] |
| DPMSInfo[1] | XShmPutImage[1] | XSyncValueGreaterThan[1] |
| DPMSQueryExtension[1] | XShmQueryExtension[1] | XSyncValueHigh32[1] |
| DPMSSetTimeouts[1] | XShmQueryVersion[1] | XSyncValueIsNegative[1] |
| XSecurityAllocXauth[1] | XSyncAwait[1] | XSyncValueIsPositive[1] |
| XSecurityFreeXauth[1] | XSyncChangeAlarm[1] | XSyncValueIsZero[1] |
| XSecurityGenerateAuthorization[1] | XSyncChangeCounter[1] | XSyncValueLessOrEqual[1] |
| XSecurityQueryExtension[1] | XSyncCreateAlarm[1] | XSyncValueLessThan[1] |
| XSecurityRevokeAuthorization[1] | XSyncCreateCounter[1] | XSyncValueLow32[1] |
| XShapeCombineMask[1] | XSyncDestroyAlarm[1] | XSyncValueSubtract[1] |
| XShapeCombineRectangles[1] | XSyncDestroyCounter[1] | XdbeAllocateBackBufferName[1] |
| XShapeCombineRegion[1] | XSyncFreeSystemCounterList[1] | XdbeBeginIdiom[1] |
| XShapeCombineShape[1] | XSyncGetPriority[1] | XdbeDeallocateBackBufferName[1] |
| XShapeGetRectangles[1] | XSyncInitialize[1] | XdbeEndIdiom[1] |
| XShapeInputSelected[1] | XSyncIntToValue[1] | XdbeFreeVisualInfo[1] |
| XShapeOffsetShape[1] | XSyncIntsToValue[1] | XdbeGetBackBufferAttributes[1] |
| XShapeQueryExtension[1] | XSyncListSystemCounters[1] | XdbeGetVisualInfo[1] |
| XShapeQueryExtents[1] | XSyncMaxValue[1] | XdbeQueryExtension[1] |
| XShapeQueryVersion[1] | XSyncMinValue[1] | XdbeSwapBuffers[1] |
| XShapeSelectInput[1] | XSyncQueryAlarm[1] | |
| XShmAttach[1] | XSyncQueryCounter[1] |