Added in 1.9.1
/dline [-hlSW] <@name> <N[-N2]>
Deletes the Nth line through N2th line in a custom window.
Switches
| Switch | Description | 
| -h | Highlights the window's node in the treebar if the window is not active. | 
| -l | Specify the action to take place on the side-listbox. | 
| -S | Use status window. (AdiIRC only) | 
| -W | Allow using a channel or query window name for @name. (AdiIRC only) | 
Parameters
| Parameter | Description | 
| <@name> | Name of the custom window. | 
| <N[ | N2]> - The range to be deleted, (negative values are not accepted) | 
Example
alias example {
  ;Open a custom window.
  /window -de @Foo
  ;Add a line, line colored in yellow. (8)
  /aline 8 @Foo Line A
  ;Add a line, color Dark Green. (3)
  /aline 3 @Foo Line B
  ;Add a line, color Dark Green. (3)
  /aline -s 3 @Foo Line C
  ;Add a line, color Dark Green. (3)
  /aline -s 3 @Foo Line D
  ;Delete line 2 and 3 with range 2-3, only A D remain.
  /dline @Foo 2-3
}