concrete syntax

from The Free On-line Dictionary of Computing (8 July 2008)

concrete syntax

   <language> The concrete syntax of a language including all the
   features visible in the source program such as {parentheses}
   and {delimiters}.  The concrete syntax is used when {parsing}
   the program or other input, during which it is usually
   converted into some kind of {abstract syntax tree}.

   Compare: {abstract syntax}.

   (1997-07-21)