--- libgig/trunk/src/gig.h	2007/05/20 10:11:39	1199
+++ libgig/trunk/src/gig.h	2007/05/26 13:59:40	1207
@@ -323,6 +323,13 @@
         progress_t();
     };
 
+    /** @brief CRC-32 checksum implementation
+     *
+     * This class is used to calculate checksums of the sample data in
+     * a gig file. The checksums are stored in the 3crc chunk of the
+     * gig file and automatically updated when a sample is written
+     * with Sample::Write().
+     */
     class CRC {
     private:
         uint32_t value;
@@ -585,7 +592,7 @@
             unsigned long        FileNo;                  ///< File number (> 0 when sample is stored in an extension file, 0 when it's in the gig)
             RIFF::Chunk*         pCk3gix;
             RIFF::Chunk*         pCkSmpl;
-            CRC                  crc;
+            CRC                  crc;                     ///< CRC-32 checksum of the raw sample data
 
             Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo = 0);
            ~Sample();