Reviewed some comments

src/raylib.h

@@ -1054,19 +1054,19 @@ RLAPI const char *GetDirectoryPath(const char *filePath);         // Get full pa
 RLAPI const char *GetPrevDirectoryPath(const char *dirPath);      // Get previous directory path for a given path (uses static string)
 RLAPI const char *GetWorkingDirectory(void);                      // Get current working directory (uses static string)
 RLAPI const char *GetApplicationDirectory(void);                  // Get the directory if the running application (uses static string)
-RLAPI char **GetDirectoryFiles(const char *dirPath, int *count);  // Get filenames in a directory path (memory should be freed)
+RLAPI char **GetDirectoryFiles(const char *dirPath, int *count);  // Get filenames in a directory path (memory must be freed)
 RLAPI void ClearDirectoryFiles(void);                             // Clear directory files paths buffers (free memory)
 RLAPI bool ChangeDirectory(const char *dir);                      // Change working directory, return true on success
 RLAPI bool IsFileDropped(void);                                   // Check if a file has been dropped into window
-RLAPI char **GetDroppedFiles(int *count);                         // Get dropped files names (memory should be freed)
+RLAPI char **GetDroppedFiles(int *count);                         // Get dropped files names (memory must be freed)
 RLAPI void ClearDroppedFiles(void);                               // Clear dropped files paths buffer (free memory)
 RLAPI long GetFileModTime(const char *fileName);                  // Get file modification time (last write time)
 
 // Compression/Encoding functionality
-RLAPI unsigned char *CompressData(const unsigned char *data, int dataSize, int *compDataSize);        // Compress data (DEFLATE algorithm)
-RLAPI unsigned char *DecompressData(const unsigned char *compData, int compDataSize, int *dataSize);  // Decompress data (DEFLATE algorithm)
-RLAPI char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize);               // Encode data to Base64 string
-RLAPI unsigned char *DecodeDataBase64(const unsigned char *data, int *outputSize);                    // Decode Base64 string data
+RLAPI unsigned char *CompressData(const unsigned char *data, int dataSize, int *compDataSize);        // Compress data (DEFLATE algorithm), memory must be MemFree()
+RLAPI unsigned char *DecompressData(const unsigned char *compData, int compDataSize, int *dataSize);  // Decompress data (DEFLATE algorithm), memory must be MemFree()
+RLAPI char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize);               // Encode data to Base64 string, memory must be MemFree()
+RLAPI unsigned char *DecodeDataBase64(const unsigned char *data, int *outputSize);                    // Decode Base64 string data, memory must be MemFree()
 
 // Persistent storage management
 RLAPI bool SaveStorageValue(unsigned int position, int value);    // Save integer value to storage file (to defined position), returns true on success