cheat sheets.

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Tags
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set tags for current heading                      C-c C-c
realign tags in all headings                      C-u C-c C-c
create sparse tree with matching tags             C-c \
globally (agenda) match tags at cursor            C-c C-o

\section{Properties and Column View}

\key{set property}{C-c C-x p}
\key{special commands in property lines}{C-c C-c}
\key{next/previous allowed value}{S-left/right}
\key{turn on column view}{C-c C-x C-c}
\key{capture columns view in dynamic block}{C-c C-x r}

\key{quit column view}{q}
\key{next/previous allowed value}{S-left/right}
\key{next/previous allowed value}{n / p}
\key{edit value}{e}
\key{edit allowed values list}{a}
\key{show value}{v}
\key{make column wider/narrower}{> / <}
\key{move column left/right}{M-left/right}
\key{add new column}{M-S-right}
\key{Delete current column}{M-S-left}