[latexrefman] Documentation improvement for "\sbox & \savebox" (20.5)

[Laurent Van Deik]

At the code for fix the issue with \sbox and \savebox and multiple lines, "\newsavebox{\areg}" is missing (http://tug.org/texinfohtml/latex2e.html#g_t_005csbox-_0026-_005csavebox <http://tug.org/texinfohtml/latex2e.html#g_t_005csbox-_0026-_005csavebox>).



Also at 20.6 lrbox, a new sentence begins with a lowercase (the word "for") and a word in the middle of the sentence begins with an uppercase ("See"):


Thanks.
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