| global_progression_handler | A Global Calling Handler For 'progression':s | 
| handler_ascii_alert | Progression Handler: Progress Reported as ASCII BEL Symbols... | 
| handler_beepr | Progression Handler: Progress Reported as 'beepr' Sounds... | 
| handler_cli | Progression Handler: Progress Reported via 'cli' Progress... | 
| handler_debug | Progression Handler: Progress Reported as Debug Information... | 
| handler_filesize | Progression Handler: Progress Reported as the Size of a File... | 
| handler_newline | Progression Handler: Progress Reported as a New Line (Text)... | 
| handler_notifier | Progression Handler: Progress Reported via the... | 
| handler_ntfy | Progression Handler: Progress Reported via the Ntfy.sh... | 
| handler_pbcol | Progression Handler: Progress Reported as an ANSI Background... | 
| handler_pbmcapply | Progression Handler: Progress Reported via 'pbmcapply'... | 
| handler_progress | Progression Handler: Progress Reported via 'progress'... | 
| handler_rpushbullet | Progression Handler: Progress Reported via the Pushbullet... | 
| handler_rstudio | Progression Handler: Progress Reported in the RStudio Console | 
| handlers | Control How Progress is Reported | 
| handler_shiny | Progression Handler: Progress Reported via 'shiny' Widgets... | 
| handler_tkprogressbar | Progression Handler: Progress Reported as a Tcl/Tk Progress... | 
| handler_txtprogressbar | Progression Handler: Progress Reported as Plain Progress Bars... | 
| handler_void | Progression Handler: No Progress Report | 
| handler_winprogressbar | Progression Handler: Progress Reported as a MS Windows... | 
| make_progression_handler | Creates a Progression Calling Handler | 
| progress | Creates and Signals a Progression Condition | 
| progress_aggregator | Aggregate Progression Conditions | 
| progression | A Progression Condition | 
| progressor | Create a Progressor Function that Signals Progress Updates | 
| progress_progressr | Use Progressr with Plyr Map-Reduce Functions | 
| progressr | progressr: A Unifying API for Progress Updates | 
| progressr.options | Options and environment variables used by the 'progressr'... | 
| register_global_progression_handler | Add or Remove a Global 'progression' Handler | 
| slow_sum | Slowly Calculate Sum of Elements | 
| with_progress | Report on Progress while Evaluating an R Expression | 
| withProgressShiny | Use Progressr in Shiny Apps: Plug-in Backward-Compatible... | 
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