A

about
abs
addAttr
addAttributeEditorNodeHelp 
addDynamic
addNewShelfTab 
addPanelCategory 
addPP
addPrefixToName 
advanceToNextDrivenKey 
affectedNet
affects
aimConstraint
air
alias
aliasAttr
align
alignCtx
alignCurve
alignSurface
allViewFit 
ambientLight
angle
angleBetween
animCurveEditor
animDisplay
animLayer
animView
annotate
appendStringArray 
applicationName 
applyAttrPreset 
applyTake
arclen
arcLenDimContext
arcLengthDimension
arrayMapper
art3dPaintCtx
artAttrCtx
artAttrPaintVertexCtx
artAttrSkinPaintCtx
artAttrTool
artBuildPaintMenu
artFluidAttrCtx
artPuttyCtx
artSelectCtx
artSetPaintCtx
artUserPaintCtx
assignCommand
assignInputDevice
assignNSolver 
assignViewportFactories
attachCurve
attachDeviceAttr
attachSurface
attrColorSliderGrp
attrCompatibility
attrControlGrp
attrEnumOptionMenu
attrEnumOptionMenuGrp
attrFieldGrp
attrFieldSliderGrp
attributeExists 
attributeInfo
attributeMenu
attributeName
attributeQuery
attrNavigationControlGrp
attrPresetEditWin 
autoKeyframe
autoPlace

indicates a MEL script