Wikipedia:Tip of the day/January 11
An image's caption is text that accompanies it. The caption may include the title of the picture and/or an explanation of what depicted in the image. Not every Wikipedia image needs a caption: some are simply decorative, while some others are self-explanatory. If you decide that an image does not need a caption, then please follow the advice at Wikipedia:Alternative text for images to specify appropriate "alt" text. Captions can be added by using the frame or thumb paramater as part of an image tag. For example: [[Imagename.jpg|frame|Write the caption here.]].
Read more: Wikipedia:Captions