Some operations can be done with either normal-mode commands or ex/vimscript commands. For example,
:resize 1 does the same thing as
1 <C-W> _.
In scripts, it's possible to simulate normal-mode commands with
execute, but it feels ugly to me. If I know the normal-mode command for an operation, but not the vimscript command, how do I find the latter? In some cases they're listed next to each other in the help, but not always.