Status of the Synchrotron Radiation Calculation Code SPECTRA: New Functions and Latest Developments.

The article provides an overview of the synchrotron radiation calculation code SPECTRA, which is used to evaluate the characteristics of synchrotron radiation. It discusses the history of the code's development, including challenges and limitations of earlier versions, and highlights new functions and improvements in the current version. The article also mentions special features of SPECTRA for beamline design. Additionally, the text discusses computational methods used to evaluate synchrotron radiation in a third-generation facility and introduces a simplified method for performing the coherent mode decomposition. The article concludes by mentioning that the SPECTRA code is available for use on the official website. [Extracted from the article]