We list here all available procedures for the HDS access. Italic names,
e.g. value, have to be replaced with variable names; they will
be allocated automatically and return the data requested. If a type is
specified, e.g. value_double
, the variable must be declared
and initialized before. Optional arguments are in square brackets, e.g. status; if several optional arguments are listed, only one can be
selected as such and arguments to the left then are compulsory! Please
refer to the HDS manual for explanations on the individual commands.