File formats, methods, and computer program products for representing presentations

A method for representing a presentation in a file format wherein modular parts associated with the presentation include each part written into the file format, the method comprising:

• writing a presentation part of the file format;
• querying the presentation part for a slide master relationship type;
• writing a slide master part of the file format separate from the presentation part;
• establishing a relationship between the slide master part and the presentation part, wherein the relationship is within a relationship hierarchy for the modular parts, the hierarchy comprising at least one explicit reference indicator indicating an explicit reference to a relationship in the content of a modular part and at least one non-explicit indicator indicating the utilization of features from a destination part by a modular part without an explicit reference;
• writing a slide layout part separate from the slide master part;
• and
• establishing a relationship between the slide layout part and the slide master part, wherein each part is one of extracted from and copied from the presentation and reused in a different presentation along with associated parts identified by traversing inbound and outbound relationships of the part reused.

A computer program product comprising a computer-readable storage medium having control logic stored therein for causing a computer to represent a presentation in a file format wherein modular parts of the file format include each part written into the file format, the control logic comprising computer-readable program code for causing the computer to:

• write a presentation part of the file format;
• query the presentation part for a slide master relationship type;
• write a slide master part of the file format separate from the presentation part;
• establish a relationship between the slide master part and the presentation part, wherein the relationship is within a relationship hierarchy for the modular parts, the hierarchy comprising at least one explicit reference indicator indicating an explicit reference to a relationship in the content of a modular part and at least one non-explicit indicator indicating the utilization of features from a destination part by a modular part without an explicit reference;
• write a slide layout part separate from the slide master part;
• and establish a relationship between the slide layout part and the slide master part, wherein each part is one of extracted from and copied from the presentation and reused in a different presentation along with associated parts identified by traversing inbound and outbound relationships of the part reused.