For inserting dashed lines inside matrix structures, I have to use the command \hdashline from the package arydshln prodominantly. I am wondering whether TeXstudio supports assigning a specific command or statement to a certain keyboard shortcut.
So more explicitly:
assign \hdashline[2pt/2pt] to the key combination Alt+Shift+0 (any combination will do).
Macromenu. a tag will call it like you defined it – naphaneal Mar 31 '16 at 17:56