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ipd153 IPD153: Shrub -- a tool for visualizing procedure activity
ipd155 IPD155: Some tools for visualizing Icon programs
ipd170 IPD170: Caterpillar -- a program visualization tool
ipd179 IPD179: Eve: An Icon monitor coordinator
ipd193 IPD193: Support procedures for Icon program monitors
ipd197 IPD197: Views of storage allocation
ipd264 IPD264: Writing Icon program execution monitors