Events:
selectionchange anchorNode=<#text > anchorOffset=0 type=Caret focusNode=<#text > focusOffset=0 isCollapsed=true
selectionchange anchorNode=<#text > anchorOffset=1 type=Caret focusNode=<#text > focusOffset=1 isCollapsed=true
selectionchange anchorNode=<#text > anchorOffset=1 type=Caret focusNode=<#text > focusOffset=1 isCollapsed=true