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command -option <value> ... <sourcevalue>
In this mode the command processes the given
<sourcevalue> and returns the transformed information as
interpreter result. With tcl 7.6 this may yield incorrect
results due to embedded \0 characters, either in
source or result.
To allow for correct operation with this version too 2
additional options are provided: -in and -out.
If option -in is present, its argument is interpreted as
channelhandle and the data to transform is read from it. A
<sourcevalue> must not be specified in that
case.
If option -out is present, its argument is interpreted as
channelhandle and the transformation result will be written
into it.
Please note that it is not necessary to specify both
options, each of them can be used alone.
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