The optional initial letter, usually T, marks the use of tight machine compression.

The letter marked a significant gesture, the first direct contact between an Iranian head of state and an American president since the revolution of 1979.

The letter marks the first time American scholars have spoken out as a group about domestic politics in China.

Those letters cannot mark the beginning of a word.

The letter marked a turning point in the history of Rwanda.

A larger letter in the margin throughout the New Testament marks the beginning of a paragraph.

The letter marked the first time Palmer has taken such a step to invite a player to his tournament.

A few letters marked the edge of the scrap, vestiges of some spell.

These early letters marked the beginning of a correspondence that was to last until Hart's death in 1982.

Nevertheless, his letter was crucial and marked a real turning point.