ATTACHURL -- full URL for attachments in the current topic

• Syntax: %ATTACHURL%
• Expands to: https://sites.astro.caltech.edu/twiki_outreach/pub/TWiki/VarATTACHURL
• Example: If you attach a file you can refer to it as %ATTACHURL%/image.gif
• Category: AttachmentsAndFilesVariables
• Related: ATTACHURLPATH, PUBURL, PUBURLPATH, SCRIPTURL, SCRIPTURLPATH, FileAttachments