Press Q to auto-run, press Shift and W to cancel.
bind q forward;sprint



Press Z to permanently crouch and auto-attack, press Left Click and Control to cancel.
bind z attack;duck



Hold Z to crouch and auto-attack (only while pressed.)

bind z +attack;+duck



Press C to permanently crouch, press Control to cancel.

bind c duck





Here's a list of available binds. From what I can tell the "+" only allows it to fire once while no + will continually perform the action.

bind f1 consoletoggle
bind backquote consoletoggle
bind f7 bugreporter
bind w +forward
bind s +backward
bind a +left
bind d +right
bind mouse0 +attack
bind mouse1 +attack2
bind mouse2 +attack3
bind 1 +slot1
bind 2 +slot2
bind 3 +slot3
bind 4 +slot4
bind 5 +slot5
bind 6 +slot6
bind 7 +slot7
bind 8 +slot8
bind leftshift +sprint
bind rightshift +sprint
bind leftalt +altlook
bind r +reload
bind space +jump
bind leftcontrol +duck
bind e +use
bind v +voice
bind t chat.open
bind returnchat.open
bind mousewheelup +invnext
bind mousewheeldown +invprev
bind tab inventory.toggle