According to the source this command was deactivated until issue #0477
and hence #1954 could be solved. However, since those issues
haven't been addressed the command has remained hidden for a long time.
This command does not work with objects that reimplement
their edit modes, meaning that it may work with Part and PartDesign
created objects but not with Draft and Arch objects.
The command is added to the standard `View` menu,
and to one `Part tools` toolbar so that it is no longer hidden.
The limitations of the command can be described in the documentation,
and then somebody else can help solve the problem
with the edit modes.
A new icon for the command is also provided.