Smart select simplifies picking data from sources.
First add a source to your dataflow that is in JSON format and locate the gear icon. Click the gear icon to see the data selection options.
There are 3 options for source data selection:
This option gives you a text box to enter key values to search and filter your source data.
For example, type "waL" in a Revit source and it will display all element names that include "waL". In this case, all objects that match are Curtain Walls,Face Walls, and Walls.
As the title implies, the All option will pick everything that exists in a data source.
This is the default method of selecting data from a source. There is still the option to select all or none from the list of data.
Here's a list for Frequently Asked Questions from Toric users just like you.
Regex, or Regular Expressions, is a way to search and filter data using a sequence in characters. A user can type in letters, numbers, or complete words to search for data.
Source: https://en.wikipedia.org/wiki/Regular_expression
JSON stands for - JavaScript Object Notation. Toric uses this data format for a large majority of integrations.
Source: https://www.w3schools.com/whatis/whatis_json.asp
All but the Google Sheets integrations and local CSV and XLSX files. Here's a list of integrations that use the JSON format: