Formatting cells in Calc is a frequent operation: e.g. number formats and other formats. Often, one formats a specific cell and wants to apply the same format to the remaining column or row. Unfortunately, this requires more effort than it should.

Solution:

Implement buttons to automatically clone the current cell to:
- the entire row;
- the remaining row, starting from the current cell;
- the entire column;
- the remaining column starting from the current cell;

Icons: ->, <->, Down-Arrow, Up/Down-Arrow;
- arrows seem adequate to indicate the function of the buttons;

Note:
- Column headers and Row headers may be formatted different;
- Applying a format to a cell in the 2nd row and then wanting to apply it to the remaining column is common;
- Current Clone tool is impractical beyond copying the format to a few cells;

Related Issues:
1. https://bugs.documentfoundation.org/show_bug.cgi?id=69190
- FORMATTING: Simplify use of Clone Formatting for whole columns or rows (allow clicking on headers, à la Excel);
- this issue is more flexible: enables to clone formatting to part of a row/column;

2. https://bugs.documentfoundation.org/show_bug.cgi?id=99936
- Clone Formating with Arrow Keys;
- slightly related;