Other iotables processing functions:
conforming_vector_create()
,
iotable_year_get()
,
key_column_create()
,
matrix_round()
,
output_get()
,
primary_input_get()
,
rows_add()
,
supplementary_add()
,
total_tax_add()
,
vector_transpose_longer()
,
vector_transpose_wider()