IBM Selectric Personal Typewriter - Shift Keys and Shift Lock (SHIFT and LOCK); To Type Uppercase Characters; To Keep the Typewriter in Uppercase; To Release the Shift Lock

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Shi ft Keys and S hift Lock (SHIFT and LOCK)
Use the shi ft and sh if t lock keys (S H IFT and LOC K) t o
type upperca
se c ha racters.
To t y pe upperc ase characte rs :
Pr
ess and hold dow n e it her t he l eft or ri gh t
sh i ft key ( SH I FT) w hile you type the cha ra cter(s)
you w ant.
To keep the ty pewriter in up percase:
Pr ess the shi ft lock key (LO CK) to type several
upperca
se characters wi t hout pr ess ing t he shi ft key
(
SH IFT ) each ti me.
To relea se the shift lock:
Pr
ess e it her t he left o r right shi ft key (SHI FT ).