テスト　スケジュール調整

<btable “2019:06:rehersal”>
<opt>showempty,colongroups</opt>

<columns>

5.
12.
19.
26.

</columns>
<rows>

Singer: one
Singer: two
Singer: three
Band: Guitar 1
Band: Guitar 2
Band: Drums
Band: Keys
Band: Bass

</rows>

</btable>