diff --git a/md2teach.xcodeproj/project.pbxproj b/md2teach.xcodeproj/project.pbxproj
index 143d738..9ed9df2 100644
--- a/md2teach.xcodeproj/project.pbxproj
+++ b/md2teach.xcodeproj/project.pbxproj
@@ -51,6 +51,7 @@
 		9D65330C2626246700105D50 /* md4c.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = md4c.c; sourceTree = "<group>"; };
 		9DDFC7B026269D23006D6E71 /* LICENSE */ = {isa = PBXFileReference; lastKnownFileType = text; path = LICENSE; sourceTree = "<group>"; };
 		9DDFC7B126269D3F006D6E71 /* README.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = README.md; sourceTree = "<group>"; };
+		9DDFC7B42627E081006D6E71 /* test.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = test.md; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -92,6 +93,7 @@
 				9D6532EE2626240800105D50 /* Makefile */,
 				9D6532F02626240800105D50 /* make */,
 				9D6532FB2626240800105D50 /* Supporting Files */,
+				9DDFC7B42627E081006D6E71 /* test.md */,
 			);
 			path = md2teach;
 			sourceTree = "<group>";
diff --git a/md2teach.xcodeproj/xcshareddata/xcschemes/md2teach.xcscheme b/md2teach.xcodeproj/xcshareddata/xcschemes/md2teach.xcscheme
index e8273c0..7259fc8 100644
--- a/md2teach.xcodeproj/xcshareddata/xcschemes/md2teach.xcscheme
+++ b/md2teach.xcodeproj/xcshareddata/xcschemes/md2teach.xcscheme
@@ -58,6 +58,14 @@
             argument = "$TARGET_BUILD_DIR/md2teach"
             isEnabled = "YES">
          </CommandLineArgument>
+         <CommandLineArgument
+            argument = "$PROJECT_DIR/md2teach/test.md"
+            isEnabled = "YES">
+         </CommandLineArgument>
+         <CommandLineArgument
+            argument = "outputfile"
+            isEnabled = "YES">
+         </CommandLineArgument>
       </CommandLineArguments>
    </LaunchAction>
    <ProfileAction
diff --git a/md2teach/main.c b/md2teach/main.c
index ed887c7..30d7691 100644
--- a/md2teach/main.c
+++ b/md2teach/main.c
@@ -8,7 +8,9 @@
  */
 
 
+#include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "md4c.h"
@@ -58,8 +60,6 @@ MD_PARSER parser = {
     NULL // syntax
 };
 
-char *testMarkdown = "Hello, world!\n\nMore text\n";
-
 
 // Implementation
 
@@ -108,10 +108,69 @@ static void debugLogHook(const char * message, void * userdata)
 
 int main(int argc, char * argv[])
 {
-    int result;
+    static int result;
+    
+    static char * commandName;
+    
+    static char * inputFileName;
+    static FILE * inputFile;
+    static long inputFileLen;
+    static char * inputBuffer;
+    
+    static char * outputFileName;
+    
     printf("Stack start: %p\n", &result);
     
-    result = md_parse(testMarkdown, strlen(testMarkdown), &parser, NULL);
+    if (argc != 3) {
+        fprintf(stderr, "USAGE: %s inputfile outputfile\n", argv[0]);
+        exit(1);
+    }
+    
+    commandName = argv[0];
+    inputFileName = argv[1];
+    outputFileName = argv[2];
+    
+    inputFile = fopen(inputFileName, "r");
+    if (inputFile == NULL) {
+        fprintf(stderr, "%s: Unable to open file %s, %s\n", commandName, inputFileName, strerror(errno));
+        exit(1);
+    }
+    
+    if (fseek(inputFile, 0l, SEEK_END) != 0) {
+        fprintf(stderr, "%s: Unable to seek to the end of file %s, %s\n", commandName, inputFileName, strerror(errno));
+        fclose(inputFile);
+        exit(1);
+    }
+    
+    inputFileLen = ftell(inputFile);
+    if (inputFileLen < 0) {
+        fprintf(stderr, "%s: Unable to get size of file %s, %s\n", commandName, inputFileName, strerror(errno));
+        fclose(inputFile);
+        exit(1);
+    }
+    
+    inputBuffer = malloc(inputFileLen);
+    if (inputBuffer == NULL) {
+        fprintf(stderr, "%s: Unable to allocate %ld bytes for input buffer\n", commandName, inputFileLen);
+        fclose(inputFile);
+        exit(1);
+    }
+    
+    if (fseek(inputFile, 0l, SEEK_SET) != 0) {
+        fprintf(stderr, "%s: Unable to seek to the beginning of file %s, %s\n", commandName, inputFileName, strerror(errno));
+        free(inputBuffer);
+        fclose(inputFile);
+        exit(1);
+    }
+    
+    if (fread(inputBuffer, 1, inputFileLen, inputFile) != inputFileLen) {
+        fprintf(stderr, "%s: Unable to read all of file %s, %s\n", commandName, inputFileName, strerror(errno));
+        free(inputBuffer);
+        fclose(inputFile);
+        exit(1);
+    }
+    
+    result = md_parse(inputBuffer, inputFileLen, &parser, NULL);
     printf("Parser result: %d\n", result);
     
     return 0;
diff --git a/md2teach/test.md b/md2teach/test.md
new file mode 100644
index 0000000..4c9fb1c
--- /dev/null
+++ b/md2teach/test.md
@@ -0,0 +1,39 @@
+# h1
+## h2
+### h3
+#### h4
+##### h5
+###### h6
+
+h1
+==
+
+h2
+--
+
+--------------------
+
+    indented code
+
+```
+fenced code
+```
+
+<tag attr='val' attr2="val2">
+
+> quote
+
+* list item
+1. list item
+
+[ref]: /url
+
+paragraph
+&copy; &#1234; &#xabcd;
+`code`
+*emph* **strong** ***strong emph***
+_emph_ __strong__ ___strong emph___
+[ref] [ref][] [link](/url)
+![ref] ![ref][] ![img](/url)
+<http://example.com> <doe@example.com>
+\\ \* \. \` \