mac man help page up + page down
If I understood you correctly, you want to skim through manual pages more efficiently.
By default, man uses less as its pager. In less, you can use:
- Space or f or Control⌃-f to advance one page
- d or Control⌃-d to advance half a page
- b or Control⌃-b to go back one page
- u or Control⌃-u to go back half a page
