ISR11 Operating Instructions for the SMART Text Processing and Document Retrieval System chapter M. E. Lesk Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. 11-42 f) the semantic values associated with each node, which must be matched. Normally, the data under c), d) and e) are supplied by reference to a standard " tree type". A table of tree 11types" exists in the program, represented in Table 6. New types may be d[OCRerr]fined, however. Trees may also be defined completely on the input cards. In fact, one may simultaneously define both trees and types with an input card. Usually, however, only the output concept number, the semantic data, the tree type, and the name and serial number are assigned by the user. The format of the criterion tree input cards, going from left to right, is as follows: a) columns 1-6 contain six BCD characters. If this is the first card of a tree, this field contains the name of the tree. This is the BOD identifier used in the /EDIT control card. If this field contains five blanks followed by an asterisk, this card is a continuation card from the preceding card. Column 1 should not contain a /, except for the last input card of the criterion tree deck, which must contain ////// in cols 1-6. If a type, rather than a tree, is being defined, the B[OCRerr] name field is ignored. However, it must be non-blank, non-zero, and satisfy all the other requirements as usual. b) the output concept number field(s) follow. This may be omitted if a type only, and no trees, are being defined. The contents of this field are the concept nuzzibers to be used as output, and the positions in the senten[OCRerr]e (the nodes) where they are to be inserted. More than one output concept number field is allowed; each field, including the first output concept number field, must be preceded by an equals sign (--). Each field is defined as foUows: i) if the output concept number is a specific integer, it must be