Improved "dropammo/cells"- allows engineer to easily drop cells in order to build/upgrade.  
Example :200 cells max carried by Engineer, 130 required for BUILD sentry gun, 70 cells remaining, drop them close, refill to 200 cells, UPGRADE sentry to LVL2, pick up remaining 70 dropped cells from floor and then upgrade sentry to LVL 3. NOTE all this was done with ONLY one resupply. 
The Following are binds that allows engineer to avoid navigator through the build menu in order to do his special tasks. In other words:
One touch build sentry.
One touch build dispenser.
One touch upgrade sentry.
One touch repair sentry.
One touch put ammo in sentry.
Detdispenser- binds a key to detonate dispenser. 
Detsentry - binds a key to detonate dispenser. 
 
//macros for sg maintenance 
alias bsent "build;wait;impulse 2;" 
alias bdisp "build;wait;impulse 1;" 
alias lwait wait;wait;wait;wait;wait;wait;wait;wait;" 
alias bupgrade "impulse 1;wait;+attack;lwait;-attack;impulse 2;" 
alias breload "impulse 1;wait;+attack;wait;-attack;lwait;impulse 1;" 
alias brepair "impulse 1;wait;+attack;wait;-attack;lwait;impulse 3;" 
bind X bsent; 
bind X bdisp; 
bind X bupgrade; 
bind X breload; 
bind X brepair; 
bind X detdispenser; 
bind X detsentry; 






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