-The following additional tests are available:
-
-* maxsize(size)
-
- Tests whether the attachment is no larger than the specified size.
- The size defaults to being in bytes, but "kb", "mb", "gb" etc can be
- used to specify the units.
-
-* minsize(size)
-
- Tests whether the attachment is no smaller than the specified size.
-
-* ispage()
-
- Tests whether the attachment will be treated by ikiwiki as a wiki page.
- (Ie, if it has an extension of ".mdwn", or of any other enabled page
- format).
-
- So, if you don't want to allow wiki pages to be uploaded as attachments,
- use `!ispage()` ; if you only want to allow wiki pages to be uploaded
- as attachments, use `ispage()`.
-
-* user(username)
-
- Tests whether the attachment is being uploaded by a user with the
- specified username. If openid is enabled, an openid can also be put here.
-
-* ip(address)
-
- Tests whether the attacment is being uploaded from the specified IP
- address.
+The `virusfree` [[PageSpec|ikiwiki/pagespec/attachment]] requires that
+ikiwiki be configured with a virus scanner program via the `virus_checker`
+option in the setup file. If using `clamav`, with `clamd`, set it to
+"clamdscan -". Or to use clamav without the `clamd` daemon, you
+could set it to "clamscan -".