since it's sometimes used to test to see which pages in a set of pages a
user can edit.
+### cansave
+
+ hook(type => "cansave", id => "foo", call => \&cansave);
+
+This hook can be used to implement arbitrary access methods to control
+when a page being edited can be saved using the web interface (commits
+from revision control bypass it).
+
+When a page is about to be saved, each registered cansave hook is
+called in turn, and passed the page name, the edited content, a CGI
+object and a session object.
+
+The return value of a cansave hook is interpreted the same as for the
+canedit hook.
+
### canremove
hook(type => "canremove", id => "foo", call => \&canremove);
This hook can be used to implement arbitrary access methods to control when
a page can be renamed using the web interface (commits from revision control
-bypass it). It works exactly like the `canedit` hook.
+bypass it). It works exactly like the `canedit` and `canremove` hook,
+but is passed:
+* a CGI object
+* a session object
+* the named parameters `src`, `srcfile`, `dest` and `destfile`.
### editcontent
hook(type => "rename", id => "foo", call => \&renamepages);
When a page or set of pages is renamed, the referenced function is
-called, and passed a reference to an array of hashes with keys:
-`src`, `srcfile`, `dest`, `destfile`, `required`. It can modify
-the array.
+called, and is passed:
+
+* a reference to an array of hashes with keys: `src`, `srcfile`,
+ `dest`, `destfile`, `required`. Such a hook function can modify
+ the array.
+* a CGI object
+* a session object
### getsetup