Update cheatsheets

calligraflow

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# calligraflow
+
+> Calligra's flowchart and diagram application.
+> See also: `calligrastage`, `calligrawords`, `calligrasheets`.
+> More information: <https://manned.org/calligraflow>.
+
+- Launch the flowchart and diagram application:
+
+`calligraflow`
+
+- Open a specific file:
+
+`calligraflow {{path/to/file}}`
+
+- Display help or version:
+
+`calligraflow --{{help|version}}`