Added grasp interpreter information to readme

1 files changed, 15 insertions, 1 deletions

diff --git a/readme.txt b/readme.txt
index 8ac034b..77f7f11 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,7 +5,7 @@ Usage of each interpreter is of the form:
 
 
 
-The Thue interpreter also has several command line switches:
+The Thue interpreter has several command line switches:
 
     -l      --left      Evaluates applicable rules left to right
     -r      --right     Evaluates applicable rules right to left
@@ -16,6 +16,12 @@ The Thue interpreter also has several command line switches:
 
 
 
+The Grasp interpreter has a command line switch:
+
+            --testing   Outputs a before and after of the graph, for debugging
+
+
+
 
 
 Fractran file format is one integer followed by an arbitrary number of
@@ -45,3 +51,11 @@ Brainfuck files should contain a number of brainfuck commands. All other
 characters are treated as whitespace and summarily ignored. The only
 restriction is that all [ loops must be closed with a corresponding ].
 
+
+
+
+Grasp files follow the DOT graph description language, but for the purposes of
+programming are restricted to digraphs. Everything is ignored except for the nodes,
+edges, and their labels. Nodes may be named arbitrarily - it is the label of the
+node that is important for the grasp program.
+