# Use package-internal list of oTree data frames
oTree <- gmoTree::oTree
# Show participant labels
oTree$all_apps_wide$participant.label
oTree$survey$participant.label
# Delete all participant labels
oTree2 <- delete_plabels(oTree)
# Show participant labels again
oTree2$all_apps_wide$participant.label
oTree2$survey$participant.label
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