This displays the component objects of a given level of an HDS file. The name, type and whether the objects are primitive or structured are displayed.
The dimensions of array object are also given.
The value of scalar primitives is displayed.
Output is to the T(erminal), the default P(rinter), a N(ewfile) with environment variable AST_LIST or appended to an existing O(ldfile) of the same name. By default output is to the terminal.
Output of multiple levels of HDS structure can be produced using HTRACE.