The behaviour of the interfaces in this library is specified by the following Standards.
| Double Buffer Extension Library | 
| X Display Power Management Signaling (DPMS) Extension, Library Specification | 
| Security Extension Specification, Version 7.1 | 
| X Nonrectangular Window Shape Extension Library Version 1.0 | 
| MIT-SHM--The MIT Shared Memory Extension | 
| X Synchronization Extension Library | 
Table A-7. libXext Function Interfaces
| DPMSCapable[2] | XShmCreateImage[5] | XSyncQueryExtension[6] | 
| DPMSDisable[2] | XShmCreatePixmap[5] | XSyncSetCounter[6] | 
| DPMSEnable[2] | XShmDetach[5] | XSyncSetPriority[6] | 
| DPMSForceLevel[2] | XShmGetEventBase[5] | XSyncValueAdd[6] | 
| DPMSGetTimeouts[2] | XShmGetImage[5] | XSyncValueEqual[6] | 
| DPMSGetVersion[2] | XShmPixmapFormat[5] | XSyncValueGreaterOrEqual[6] | 
| DPMSInfo[2] | XShmPutImage[5] | XSyncValueGreaterThan[6] | 
| DPMSQueryExtension[2] | XShmQueryExtension[5] | XSyncValueHigh32[6] | 
| DPMSSetTimeouts[2] | XShmQueryVersion[5] | XSyncValueIsNegative[6] | 
| XSecurityAllocXauth[3] | XSyncAwait[6] | XSyncValueIsPositive[6] | 
| XSecurityFreeXauth[3] | XSyncChangeAlarm[6] | XSyncValueIsZero[6] | 
| XSecurityGenerateAuthorization[3] | XSyncChangeCounter[6] | XSyncValueLessOrEqual[6] | 
| XSecurityQueryExtension[3] | XSyncCreateAlarm[6] | XSyncValueLessThan[6] | 
| XSecurityRevokeAuthorization[3] | XSyncCreateCounter[6] | XSyncValueLow32[6] | 
| XShapeCombineMask[4] | XSyncDestroyAlarm[6] | XSyncValueSubtract[6] | 
| XShapeCombineRectangles[4] | XSyncDestroyCounter[6] | XdbeAllocateBackBufferName[1] | 
| XShapeCombineRegion[4] | XSyncFreeSystemCounterList[6] | XdbeBeginIdiom[1] | 
| XShapeCombineShape[4] | XSyncGetPriority[6] | XdbeDeallocateBackBufferName[1] | 
| XShapeGetRectangles[4] | XSyncInitialize[6] | XdbeEndIdiom[1] | 
| XShapeInputSelected[4] | XSyncIntToValue[6] | XdbeFreeVisualInfo[1] | 
| XShapeOffsetShape[4] | XSyncIntsToValue[6] | XdbeGetBackBufferAttributes[1] | 
| XShapeQueryExtension[4] | XSyncListSystemCounters[6] | XdbeGetVisualInfo[1] | 
| XShapeQueryExtents[4] | XSyncMaxValue[6] | XdbeQueryExtension[1] | 
| XShapeQueryVersion[4] | XSyncMinValue[6] | XdbeSwapBuffers[1] | 
| XShapeSelectInput[4] | XSyncQueryAlarm[6] | |
| XShmAttach[5] | XSyncQueryCounter[6] |