+<sect>Querying sector size<label id="sectsize"><p>
+
+Some systems support multiple diskette formats which have different sector sizes.
+The following function returns the sector size of the currently inserted disk:
+
+<tscreen><verb>
+ sectsize_t __fastcall__ dio_query_sectsize(dhandle_t handle);
+</verb></tscreen>
+
+On the Atari platform, the sector size is handled specially. Please refer
+to the DIO section in the <htmlurl url="atari.html" name="Atari">
+specific platform documentation.