Controlling modes of sub-title presentation

One or more non-transitory computer-readable storage mediums storing one or more sequences of instructions for presenting a sub-titles stream or file on the terminal of a user, wherein execution of the one or more sequences of instructions by one or more processors causes:

• selecting on the terminal a mode of presentation of sub-titles;
• reading a sub-titles block associated with the mode of presentation in the stream or file;
• and
• presenting on the terminal the at least one sub-titles block according to the mode of presentation.

An apparatus for creating a sub-titles stream or file composed of sub-titles elements, comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable storage mediums storing one or more sequences of instructions, which when executed, cause:
• for each sub-titles element in said sub-titles elements, performing:
• inserting a sub-titles element into the sub-titles stream or file;
• verifying at least one end-of-block condition related to a mode of presentation of sub-titles;
• and
• upon satisfying said at least one end-of-block condition, inserting into the sub-titles stream or file a datum representative of an end of a block according to the mode of presentation of sub-titles.

An apparatus for presenting a sub-titles stream or file on the terminal of a user, comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable storage mediums storing one or more sequences of instructions, which when executed, cause:
• selecting on the terminal a mode of presentation of sub-titles;
• reading a sub-titles block associated with the mode of presentation in the stream or file;
• and
• presenting on the terminal the at least one sub-titles block according to the mode of presentation.