This is with reference to the RELIEF example available in Caesar for dynamic analysis of Relief valve.
The corresponding write up in the Caesar manual mentions that typing a hash(#)against the name of the Spectrum means that shock table will be read from ASCII file.
I do have an option to generate an independent spectrum without the mark #.
My query is what does the Hash (#) actually do?? How is the HAsh spectrum different from the one without Hash(#) for the same Force Vs Time profile.
I tried generating a spectrum with both styles (with # and without #) and there was a marked difference in the spectrum curve in both cases. Hence the question to know the difference between the two.

The # indicates that the data will come from the external file rather than data defined as part of the dynamic input.
The name of the file on your PC would be something like DLF_Spectrum.txt. It contains two simple columns separated by at least one space holding the DLF vs frequency data. The # is not part of the file name. Instead the # is used in the CAESAR II input to indicate that the data comes from the external file.