This stands for table row. The number of rows in a table is exactly specified by how many <TR> elements are contained within it, regardless of cells that may attempt to use the ROWSPAN attribute to span into non-specified rows.
The <TR> element can have the following attributes.
ALIGN="left|center|right"
This controls whether text inside the table cell(s) is aligned to the left, right or centre of the cell.
VALIGN="top|middle|bottom|baseline"
This attribute controls whether text inside the table cell(s) is aligned to the top, bottom, or vertically centred within the cell. It can also specify that all the cells in the row should be vertically aligned to the same baseline.
BGCOLOR="#rrggbb|colour name"
Internet Explorer and Netscape support use of this attribute (also supported in the <BODY> element). It allows the background colour of the table to be specified, using either the specified colour names, or a rrggbb hex triplet.
BORDERCOLOR="#rrggbb|colour name"
Internet Explorer includes support for this attribute which sets the border colour of the row. Any of the pre-defined colour names can be used, as well as any colour defined by a rrggbb hex triplet. It is necessary for the BORDER attribute to be present in the main <TABLE> element for border colouring to work.
BORDERCOLORLIGHT="#rrggbb|colour name"
Internet Explorer allows use of the BORDERCOLORLIGHT attribute to set independently, the lighter colour to be displayed on a 3-dimensional row border. It is the opposite of BORDERCOLORDARK. Any of the pre-defined colour names can be used, as well as any colour defined by a rrggbb hex triplet. It is necessary for the BORDER attribute to be present in the main <TABLE> element for border colouring to work.
BORDERCOLORDARK="#rrggbb|colour name"
Internet Explorer allows use of the BORDERCOLORDARK attribute to set independently, the darker colour to be displayed on a 3-dimensional row border. It is the opposite of BORDERCOLORLIGHT. Any of the pre-defined colour names can be used, as well as any colour defined by a rrggbb hex triplet. It is necessary for the BORDER attribute to be present in the main <TABLE> element for border colouring to work.
NOTE : The BGCOLOR, BORDERCOLOR, BORDERCOLORLIGHT and BORDERCOLORDARK attributes can also be used in <TABLE>, <TH> and <TD> elements, with the colour defined in the last element over-riding those defined before. E.g. if a <TD> element contains a BORDERCOLOR attribute setting, the setting specified will be used instead of any colour settings that may have been specified in the <TR> element, which in turn over-rides any colour settings in the <TABLE> element.