How much notice do you have to give? <a href=" http://www.balanceability.com/buy-griseofulvin-500mg.pdf ">can i buy griseofulvin over the counter</a> There are many ways to embed text and data into image files but the two most widely used systems are known as EXIF and IPTC, and are the best options if keeping the information safe for posterity is a concern. EXIF (Exchangeable Image File Format) may be familiar to owners of digital camera; it records such things as the file name of a photo, the time and date it was taken and various technical details (exposure, shutter speed, resolution, file size and so on). EXIF has a Comments option, which is normally used for titles or captions but it has the capacity to store more than a thousand words. IPTC (International Press Telecommunications Council), which sounds like the one you have read about, uses a metadata format called IIM (Information Interchange Model). It is mostly used by professional photographers and news organisations, to store information about the image in a more organised way, with fields for title, caption, headline, category, credits, copyright and so on. It also has a Comments section that can hold large volumes of text. EXIF and IPTC metadata can be displayed by a number of image viewer and picture editing programs but the best one-stop solution is our old friend Irfanview. This lets you add, edit and show your text, either from Information on the Options menu, or simple shortcuts (I C for EXIF Comment and I I for IPTC metadata). Irfanview is free and there&rsquo;s a link to the download at: http://goo.gl/hiUVG.