+.SS "oldest"
+.PP
+This algorithm works with the Changer API (see
+\fBamanda-changers\fR(7)), using the inventory returned by the changer to locate the oldest acceptable volume available\&. Note that this will not work with changers that do not support inventory (old changers)\&. The algorithms scans unknown slots only if no known usable volume is found in the inventory\&.
+.PP
+An acceptable volume is a reusable volume, a new labeled volume or an unlabeled volume that can be labeled according to
+\fBautolabel\fR\&. Note that changers do not always know the contents of every slot \- for example, a tape with an unknown barcode will not be considered usable\&.
+.PP
+Use
+\fBamtape CONF inventory\fR
+to see the changer\*(Aqs inventory, and use
+\fBamtape CONF update\fR
+to update it\&.
+.SS "lexical"
+.PP
+This algorithm also works with the Changer API, using the inventory to determine the acceptable volumes; it then uses the volume which follows the last\-used volume in lexical order\&. For volume labels containing leading zeros, e\&.g\&.,
+CORP\-010, this algorithm will run through the volumes in the natural order\&.
+.PP
+It scans unknown slots only if no usable volume is found in the inventory\&.
+.PP
+See
+\fBoldest\fR, above, for a definition of acceptable volumes\&.