There are ERRORS on this page. Please fix!
One is the following:
On the "Showing properties and groups in the Timeline panel (keyboard shortcuts)" section, you say that to "Add or remove keyframe at current time" you use "Altproperty shortcut". This is wrong. It is actually AltShiftproperty shortcut. Also, you do not mention the CtlShift+property shortcut that allows you to add and/or change a keyframe value at current time.