What does hm mean?

HM refers to Hypermedia (HM), which is the combination of hypertext and multimedia in information browsing environment.

It is a non-linear, dynamic, hierarchical and three-dimensional information connection and representation method that links various multimedia and virtual reality information in various discrete units or nodes in the network, including numbers, characters, sounds, graphics, images, animations, movies and other information.

By using hypermedia links, data or information distributed all over the world can be integrated to form a very large-scale database with rich resources for people to use on demand. Hypermedia is the combination of hypertext and multimedia in information browsing environment. It's short for hypermedia.

Extended data:

System composition of hypermedia

1, editor-can help users to establish and modify nodes and chains of information networks. For different users, hypermedia system gives different modification capabilities. Some users may not have any editing ability and only play; Some users can annotate and mark paths; For the creator, all editing functions include creation, modification and deletion.

2. Navigation tool-Hypermedia system supports two forms of query. One is a condition-based query similar to a database, and the other is an interactive query along the chain. When there are many nodes, the following query must have navigation tools, otherwise it will get lost.

3. Hypermedia language-It can describe the structure, nodes and other attributes of hypermedia networks in a programmatic way. In a word, the use of hypermedia language can facilitate the establishment of multimedia information system for the creation, collation and update of a large number of multimedia data.

Baidu encyclopedia -HM (hypermedia)