It is:

118 = MENU_CUSTOM_ITEM | MENU_MODIFIED_BY_ADMIN
= MENU_VISIBLE_IN_TREE | MENU_VISIBLE_IN_BREADCRUMB | MENU_CREATED_BY_ADMIN | MENU_MODIFIABLE_BY_ADMIN | MENU_MODIFIED_BY_ADMIN

and

116 = MENU_VISIBLE_IN_BREADCRUMB | MENU_CREATED_BY_ADMIN | MENU_MODIFIABLE_BY_ADMIN | MENU_MODIFIED_BY_ADMIN

There is no way to get a custom menu entry of type 116 without injecting by module or database hacking.

I made a little example of what nice things you could achive with 116:

http://www.d-f-g.net/drupal-request/drupal.png
http://www.d-f-g.net/drupal-request/phpmyadmin.png

Task: Make Checkboxes for:

[x] visible in tree
[x] visible in breadcrumb

Hopefully, DFG