[GreenKeys] Model 15 without blank key

[Jim Cooper]

On 21 Nov 2021 at 2:06, steve bennett via GreenKeys wrote:

>  Did Western Union machines provide
> an alternate method of advancing paper
> tape withoutadvancing the carriage?
> And why would anyone need to?Sorry I'm
> still clueless. Maybe to get the
> tape started feeding after putting in
> a new roll?I'm grasping at straws. 

Blank tape (that is, tape with only the feed holes 
punched) is what you would get from the 'blank key' 
and it could be wanted for a couple of reasons ... 

to give a leader to start feeding it into a TD 
(blank tape is easier to handle than LTRS tape) 

or the operator might want to write a label 
of other code on the start of the tape, for 
routing or filing purposes. 

LTRS is what is used to delete erroneous punches, 
since all five holes are punched and nothing prints. 

w2jc