What is Memento?

I noticed that makensis.nsi uses a feature named "Memento".

I searched for it in the NSIS User Manual and all I could I find is:

Added Memento.nsh for easy persistency of user selections across different runs of the installer

I searched this forum too and all I could find are problem postings related to Memento but now explaining really how it works and how to use it:

I even found RFE #1677624 but all it says is:

the installer of NSIS should remember the settings previously specified. such as "uninstall before installation" (because i always use the other option) and also for the components page. previously disabled sections should be deselected by default when upgrading.

Is there some place where I can learn more about Memento?

Thanks,
Chris

The most obvious place is the header-file itself:
NSIS\Include\Memento.nsh

There are lots of comments at the beginning of the file... 😉

Originally posted by LoRd_MuldeR
The most obvious place is the header-file itself:
NSIS\Include\Memento.nsh
There are lots of comments at the beginning of the file... 😉

Thank you! I looked at Memento.nsh and it seems to be exactly what I was looking for.

Chris