This function returns the length of the input string as the number of characters in an ASCII-8 string, or the number of symbols in a UTF-8 string .
In UTF-8 supporting versions 4.5.1 and higher NULL characters are no longer cut
out from strings, resulting in a different behavior:
-->?Len("A" + Chr$(0) + "B")
Len of Chr$(0) is 1:
In former versions NULL characters could not appear in the middle of strings, since
theconcationation process cut these characters from the resulting string.
<return value>: Long
<return value>: 0 to MaxLong
Configuration, Task or Terminal
? Len (“Hello”)