1900-01-01 is a date we use to indicate an unknown date. For example, if the start date of a contract is unknown, the date will show as 1900-01-01. (If you actually have a contract that's dated from January 1, 1900, let us know!)
Contract Term - see Term Pattern.
Document Table refers to a table showing a list of documents, with each row indicating a document, and each column indicating a field associated with that document. Document Tables feature in pages such as the Inbox, Review, and Search Results.
Metadata, or "data about data", refers to all the attributes about documents that you keep track of in fields, such as titles, party names, and dates. "Fields" and "metadata" are terms that can be used interchangeably.
Notice deadline refers to the date by which you need to give notice to the other party in order to do something. For example, a contract may say: "This agreement will automatically renew for another 12 months unless you give 30 days' notice before the renewal date." The notice deadline in this case, to prevent the contract from renewing, is the date 30 days before the renewal date.
Reminders are reminders about date-based events that occur in contracts. Currently, reminders are sent out via email, and can be set up for contract renewal dates, expiry dates, and notice deadlines. Reminders are emailed out at about 5am local time, based on the time zone you've selected in your User Settings page.
Single File View refers to the page on which you can see the details for a single document. On this page you can do things like review the document, edit its metadata, and set reminders and key dates. Single File View for a document can be accessed by clicking the icon on any page which lists that document in a document table.
Term Pattern refers to how the term or duration of a contract is structured. For example, what the term of the contract is (e.g. 12 months, 2 years, or something else), whether the contract has multiple terms, whether the contract automatically renews, and what notice periods are provided in the contract to prevent it from renewing into the next term. A term pattern is made up of one or more term segments.
Term Segment refers to different discrete portions of a term pattern. For example, a contract may start off with an initial trial period of 3 months, and then will renew into a regular 12 month term. The initial 3 month term is one term segment, and the 12 month renewal term is another term segment.
Validation (of a document) refers to the process of marking a document in the Inbox as having been validated. If a document is marked as being validated, it implies that the accuracy of the key fields listed on the Inbox page have been verified by a human. (The Inbox only contains unvalidated documents.)
Validation (of a field) refers to the process of marking a field as having been verified by a human. Fields shaded in pink are unvalidated and can be validated by double clicking on them and either modifying its value or pressing "enter" to save the value as is. If you double click on an unvalidated field by accident, you can press "esc" to back out without validating the field.