data-source specification. Each data-source is defined by a quadruple made up
of the data-source name, type, minimal and maximal values, delimited by colons
(":"): I<ds-name>:I<ds-type>:I<min>:I<max>. I<ds-type> may be either
data-source specification. Each data-source is defined by a quadruple made up
of the data-source name, type, minimal and maximal values, delimited by colons
(":"): I<ds-name>:I<ds-type>:I<min>:I<max>. I<ds-type> may be either