6 ;;Quote: in a research center, 3/4's of all commands were text editing commands

6 ;;Quote: in a time-sharing system, 20% were high frequency users and accounted for 60% of total connect time

6+;;Quote: infrequent users also had very short terminal sessions

6 ;;Quote: the two main groups of computer users are sophisticated/frequent users and unsophisticated/infrequent users

9 ;;Quote: no difference in learning and performance between a goto language and flowcharts; both better than if..then..else programs

9 ;;Quote: a 'procedure table' consists of columns specifying conditions and sets of subsequent actions; checked from top to bottom

9 ;;Quote: found procedure tables (transposed decision table) significantly better than IF, BRANCH, and FLOW control

9+;;Quote: procedure tables are like a transposed decision table, or SNOBOL's flow of control

10 ;;Quote: while representing transfer-of-control caused difficulty, structured programming improved organization, performance, and ease of learning; subjects liked it

10 ;;Quote: procedure tables work best for simple problems

13 ;;Quote: natural language emphasizes the action while programming languages emphasize the conditions and control structures

14 ;;Quote: conditions in natural language procedures are expressed as qualifications to the action or its object

14 ;;Quote: conceptualize imperative verbs in natural language procedures by preconditions, program, results, and operands

15 ;;Quote: instead of programming languages, use natural language with a considerably restricted syntax and lexicon