There is no specific bidirectional support implemented in the system support for Direct Manipulation.
Bidi-Aware applications that add their own type of 'direct manipulation mechanism' (such as a spreadsheet program externalizing its drag & drop mechanism, so that another application can interface with it), must publish, as part of their interface specification, the bidi attributes, so that other applications, which may use different types of text, can do the necessary bidi text conversion, if required.