flags in vi's man page

[attilio]

Good evening.
Reading vi's man page of 5.9 release I'm not able to find the possible values of flags in some vi/ex commands.
For example, the ex s[ubstitute] command has the form

[range] s[ubstitute] [/pattern/replace/] *[options] [count] [flags]

In Internet I found some esamples and the possible values "g", for "global", and
perhaps "c" (I'm not shure) for "confirm".

Is there a list of all possible values in any man page?
Thanks in advance.
Attilio