String Concatenation
====================

   There is only one string operation: concatenation.  It does not have
a specific operator to represent it.  Instead, concatenation is
performed by writing expressions next to one another, with no operator.
For example:

     awk '{ print "Field number one: " $1 }' BBS-list

produces, for the first record in `BBS-list':

     Field number one: aardvark

   Without the space in the string constant after the `:', the line
would run together.  For example:

     awk '{ print "Field number one:" $1 }' BBS-list

produces, for the first record in `BBS-list':

     Field number one:aardvark

   Since string concatenation does not have an explicit operator, it is
often necessary to insure that it happens where you want it to by
enclosing the items to be concatenated in parentheses.  For example, the
following code fragment does not concatenate `file' and `name' as you
might expect:

     file = "file"
     name = "name"
     print "something meaningful" > file name

It is necessary to use the following:

     print "something meaningful" > (file name)

   We recommend you use parentheses around concatenation in all but the
most common contexts (such as in the right-hand operand of `=').