# Other parameters

These parameters enable you to reload style sheets that DITA-OT uses for specific pre-processing stages.

dita.html5.reloadstylesheet
dita.preprocess.reloadstylesheet
dita.preprocess.reloadstylesheet.clean-map
dita.preprocess.reloadstylesheet.conref
dita.preprocess.reloadstylesheet.lag-module
dita.preprocess.reloadstylesheet.mapref
dita.preprocess.reloadstylesheet.mappull
dita.preprocess.reloadstylesheet.maplink
dita.preprocess.reloadstylesheet.topicpull
dita.xhtml.reloadstylesheet

  Specifies whether DITA-OT reloads the XSL style sheets that are used for the transformation. The allowed values are true and false; the default value is false.

  During the pre-processing stage, DITA-OT processes one DITA topic at a time, using the same XSLT stylesheet for the entire process. These parameters control whether Ant will use the same `Transformer` object in Java, the object that handles the XSLT processing, for all topics, or create a separate `Transformer` for each topic.

  The default (false) option uses the same `Transformer`, which is a little faster, because it will not need to parse/compile the XSLT stylesheets and only needs to read the source trees with `document()` once. The downside is that it will not release the source trees from memory, so you can run out of memory.

  Tip:
  For large projects that generate Java out-of-memory errors during transformation, set the parameter to true to allow the XSLT processor to release memory. You may also need to increase the memory available to Java.