In bug 120858 more attention to Shift+F5 was requested but the OP agreed with existing options in the end. Please double-check if the help is sufficient here.
The associated command is .uno:RestoreEditingView. It is available in all modules. Only in Impress it has a different shortcut, see the list in Expert Configuration.
In Writer the label is "Restore Editing View" with shortcut Shift+F5.
In Impress the label is "Jump to last Edited Slide" with shortcut Shift+Alt+F5. But I do not get it work in Impress.
I have not tested, whether it works in other modules.
It is an very old OOo feature, which was planed in http://specs.openoffice.org/appwide/open_doc_behavior/OpenDocumentBehavior.sxw. I don't know whether it was implemented as planed.
Currently a hint to Shift+F5 is in help in /text/shared/guide/doc_open.html ("Opening Documents") in section "Cursor Position".
Olivier Hallot committed a patch related to this issue.
It has been pushed to "master":
tdf#122631 Describe Shift+F5 in Writer
A polite ping to Olivier Hallot:
Is this bug fixed? if so, could you please close it as RESOLVED FIXED ? Otherwise, Could you please explain what's missing?