<!-- This is a comment. They are not shown in the final issue and are only informative. You can remove them or ignore them --> Description ================== We should add a message to the columns header describing the meaning of the * symbol (auto update). Also, I think that we should add a symbol (for example: **↓ symbol**) and a message informing that a column is referencing data from another spreadsheet. This is especially important if you are working on a copy of another spreadsheet with formulas and you are even not aware that the reference to allegedly nearby columns is in fact fixed to the source (external) spreadsheet. I know from my own experience that this process of duplicating and modifying spreadsheets is **very prone to inadvertent errors**. LabPlot Version ------------------ <!-- Add text from the labplot executable between the ``` ``` block below: Help -> About LabPlot --> ``` LabPlot 2.11.80 Release build da1921b Mar 31 2025, 09:25:17 System: Windows 10 Version 22H2 Locale: Polish, Poland Number Format: 1,000.01 (Updated on restart) Architecture: x86_64-little_endian-llp64 Kernel: winnt 10.0.19045 Components: Qt 6.8.1 KDE Frameworks 6.12.0 Cantor 24.12.3 CFITSIO Discount 2.2.7 Eigen3 3.4.0 FFTW3 3.3.7 GSL 2.7 HDF5 HDF5 library version: 1.14.3 KSyntaxHighlighting 6.12.0 KUserfeedback 6.12.0 libcerf missing liborigin 3.0.2 Matio 1.5.21 MCAP 1.4.0 NetCDF 4.8.0 ORCUS 0.20.0 Poppler 25.03.0 Purpose 6.12.0 QADS 2.11.80 Qt MQTT 6.8.1 Qt SerialPort 6.8.1 Qt Svg 6.8.1 QXlsx 1.4.4 ReadStat Vector BLF git C++ Compiler: MSVC 19.43.34808.0 C++ Compiler Flags: -IC:/gitlab/craft/windows-msvc2022_64-cl/include/boost-1_86 -EHsc /we4715 /W3 /wd4250 /wd4251 /wd4396 /wd4661 /Zc:__cplusplus -W3 -DPSAPI_VERSION=1 /Zc:externC- -O2 ```