Non-Image Data
Several formats allow you to store non-image data such as comments, tags, and markers. These are discussed in more detail in the following topics:
Implementing TIFF Comments and Tags
In addition, you can also add text or file messages to bitmaps. To add a message to a bitmap, use the L_AddMessageToBitmap function. A message that has been added using the L_AddMessageToBitmap function can be retrieved using the L_ExtractMessageFromBitmap.