Name
page:MeasureText -- get byte length of text
Synopsis
bl, rw = page:MeasureText(text, width, wordwrap)
Function
page:MeasureText() calculates the byte length which can be included within the specified width.

The wordwrap parameter configures how words should be wrapped: Suppose there are three words: "ABCDE", "FGH", and "IJKL". Also, suppose the substring until "J" can be included within the width (12 bytes). If wordwrap is False the function returns 12. If wordwrap parameter is True, it returns 10 (the end of the previous word).

Inputs
text
the text whose length to compute
width
the width of the area to put the text
wordwrap
boolean that says whether wordwrapping should be used
Results
bl
byte length of text
rw
real width of text
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