u4.32.21 Operator CALC_SPEC# 1. But 2. Syntax 3. Key words 3.1. Keyword TAB_ECHANT 3.2. Keyword ECHANT 3.3. Keyword INTERSPEC 3.4. Keyword TRANSFERT 3.5. Keyword TITRE 4. Examples 4.1. Calculation of an interspectral matrix from a table_function 4.2. Calculating transfer functions from functions