> On 22/12/2014 03:04 PM, Francois Labreque wrote:
>
>> IBM Selectric typewriter.
>
> Does that mean you have to change the golfball for each individual
> character? (And is that how the subscripts and superscripts work?)

No.  You just select a ball that has regular letters and math symbols. 
(each ball had 72 characters, IIRC.)

Super/subscript was done with a different lever or key that raised or 
lowered the key slightly.  Many typewriters - even the kiddie one I ah 
when I was but a wee lad - had that option.  and for those that didn't 
you simply rolled the sheet up or down using the big rollers at the 
back, and then put the sheet back in place to continue typing.

Now, before you say: "but that was a lot of work"  We were used to it as 
we had to do it whenever we needed to correct a mistake and apply 
white-out.

>
> I presume the underlining is done by hand with a ruler.

Probably.  You could return the carriage to the left (hence the name 
"carriage return" for \r) and type over the words that needed 
underlining with the underline symbol, as well, but if you needed to 
underline a big portion of the line, it was easier to use a black pen 
and a ruler.


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