This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)

StartOfString

StartOfString
represents the start of a string for purposes of matching in StringExpression.
Test whether a string starts with an "a":
Replace the first letter in a string:
Remove the leading spaces:
Test whether a string starts with an "a":
In[1]:=
Click for copyable input
Out[1]=
 
Replace the first letter in a string:
In[1]:=
Click for copyable input
Out[1]=
 
Remove the leading spaces:
In[1]:=
Click for copyable input
Out[1]//FullForm=
New in 5.1