In , we can find the Raman spectra of multi-walled nanotubes, besides other carbon materials, such as the graphitised porous carbon (Carbotrap) and graphite, recorded with excitation wavelengths at 532 and 785 nm, "and analysed for band positions and shape with special emphasis paid to the D, G and G' bands. … Spectral features similar to those of the MWCNT filter varieties were observed for the Carbotrap material" . The spectra are shown by Heise and coworkers, in their Fig. (a) and (b) in the region 1200-2800 cm -1 . Specifically, the analyzed materials were SWCNTs Aldrich, two MWCNT filter varieties, MWCNT Aldrich, Carbotrap and graphite. "A rigorous line shape analysis of the Raman line profiles corresponding to G-band … was performed taking widely varying initial guesses for three peaks. However, each start value finally yielded the same wavenumber positions for the three band components. During the fitting of the measured Raman line profile, each component band was assumed be a mixture of a Lorentzian and a Gaussian profile. Although the fitting is done by taking the sum of Lorentzian and Gaussian line shapes, a judicious mixture of the two profiles is nearly as good as a Voigt profile" . However, Heise and coworkers report that "Athalin and Lefrant, 2005, stated that only a single peak with a full width at half maximum (FWHM) larger 70 cm -1 would appear for MWCNT in contrast to the case of SWCNTs" . "Besides the first-order D-band, the spectra of [Heise and coworkers'] graphite bar sample also show another first-order band at ∼1620 cm -1 , which is called D2-band and accounts for the structural disorders. Like the G-band of graphite, the D2-band also corresponds to a graphitic lattice mode with E2g symmetry" Heise et al., mentioning Sadezky et al., 2005) Heise and coworkers stress that "multiple splittings of G-band modes were observed for individual MWCNTs by , who stated that for verifying the symmetry assignments, polarised Raman scattering studies would be needed". Further references to studies about polarized Raman spectroscopy of aligned MWCNTs and about the influence of the diameters in the Raman spectra of multiwalled aligned CNTs are referred . Let us stress that Heise and coworkers observed in the Raman spectra of Carbotrap "a spectral feature similar to that of CNTs". accompanied by a D' shoulder. Lorentzian and pseudo-Voigt lines are used. We have therefore the possibility of using different line shapes. Ferrari and Robertson made an important observation about the BWF line, that it is an efficient way to fit the data. In fact, both symmetric and asymmetric bands can be fitted to BWF lines. However, we have deviations from the Lorentzian line shape too, and in fact, Voigt and pseudo-Voigt line shapes are often preferred. In 2023, we proposed for Raman spectroscopy a generalization of the Lorentzian profile as a q-Gaussian line shape. The q-Gaussian is a function based on the Tsallis q-form of the exponential function (see Appendix B). When q is equal to 2, we have the Lorentzian function. If q is close to 1, we have a Gaussian function. For values of q between 1 and 2, we have a bell-shaped function with power-law wings ranging from Gaussian to Lorentzian tails . It means that we can consider a Lorentzian line shape and deform it by means of the q-Gaussian. Consequently, let us use a q-BWF line shape to deform the BWF, so that we can contemplate, in one line shape, symmetry and asymmetry, Lorentzian and Gaussian features. To deform BWF, let us define q-BWF function as follows: