The column letter or letters are at the top of each column. In a cell reference the column letter or letter comes before the row number, giving cell references like these:
C5
AK34
D3890
Letter at the top of the column.
Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.Column 255 in Excel is column IU.
Click on the letter at the top of the column; that will select the entire column.
That depends on the version. Up to version 2003, it was row 65,536. From Excel 2007 onwards, it is row 1,048,576.
Column IV is not the last column in Excel 2007, as it was in Excel 2003. In Excel 2003 the last column is IV which is column 256. In Excel 2007 the last column is XFD, which is column 16384.
The author of this question categorised it in Microsoft Excel. I am not aware of anything called "swim lanes" related to MS Excel. However, you can highlight a column by clicking on the column heading (the letter of the column at the top of the screen).
Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.Autofit is the facility in Excel to widen out a column to fit the widest entry in the column so that it is visible in full.
Column headings start at A. After reaching Z, the next is AA, then AB and so on. What the last column is will depend on the version of Excel that you have. Column IV, which is the 256th column, is in the versions up to Excel 2003. From Excel 2007 there are 16,384 columns and last one is column XFD.
column margin
A column break is a term associated with Microsoft Word, not Excel. In Word, it starts a new column of text. In Excel, you can just go to another column to start entering new data.
In Excel 2010, the default column width is set to 8.43 characters, which is approximately equivalent to 64 pixels. This width is designed to accommodate standard text entries, but users can easily adjust the column width to fit their specific data needs.
It is column BA