Ksp reference Manual

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Examples
on init
declare $a
declare ui_label $label (2,6)
set_text ($label,"Release Trigger Groups:")
while ($a < $NUM_GROUPS)
if(get_engine_par($ENGINE_PAR_RELEASE_TRIGGER ,$a,-1,-1)=1)
add_text_line($label,group_name($a)&" (Index: "&$a&")")
end if
inc($a)
end while
end on
Output the name and index of release trigger group
on init
declare ui_label $label (2,6)
declare ui_button $Refresh
declare !effect_name[128] 
!effect_name[$EFFECT_TYPE_NONE] := "None"
!effect_name[$EFFECT_TYPE_PHASER] := "Phaser" 
!effect_name[$EFFECT_TYPE_CHORUS] := "Chorus" 
!effect_name[$EFFECT_TYPE_FLANGER] := "Flanger" 
!effect_name[$EFFECT_TYPE_REVERB] := "Reverb" 
!effect_name[$EFFECT_TYPE_DELAY] := "Delay" 
!effect_name[$EFFECT_TYPE_IRC] := "Convolution"
!effect_name[$EFFECT_TYPE_GAINER] := "Gainer"
declare $count
while ($count < 8)
add_text_line($label,"Slot: " & $count+1 & ": " & ...